Results 31 to 40 of about 3,870 (308)

Polarization properties of weakly magnetized neutron stars in low-mass X-ray binaries

Monthly Notices of the Royal Astronomical Society, 2022
ABSTRACT X-ray polarimetry missions like Imaging X-ray Polarimetry Explorer will be able to measure for the first time the polarization properties of accreting, weakly magnetized neutron stars in low-mass X-ray binaries. In this work, we present simulations of the expected X-ray polarized signal, including the coronal emission for ...
A Gnarini, F Ursini, G Matt, S Bianchi, F Capitanio, M Cocchi, R Farinelli, W Zhang   +7 more
openaire   +3 more sources

Extreme quiescent variability of the transient neutron star low-mass X-ray binary EXO 1745-248 in Terzan 5 [PDF]

, 2018
EXO 1745−248 is a transient neutron star low-mass X-ray binary that resides in the globular cluster Terzan 5. We studied the transient during its quiescent state using 18 Chandra observations of the cluster acquired between 2003 and 2016.
Rivera Sandoval, L. E., Parikh, Aastha S., Wijnands, Rudy, Cavecchi, Y., Bahramian, Arash, Miller, Jon M., Altamirano, Diego, Heinke, Craig O., Homan, Jeroen, Sivakoff, Gregory Robert, Denegaar, Nathalie, Cackett, Edward M.   +11 more
core   +1 more source

Hard X-ray colours of neutron star and black hole low mass X-ray binaries with INTEGRAL [PDF]

Advances in Space Research, 2007
Paper from poster presentation at COSPAR meeting, Beijing, 2006.
Paltani, Stéphane, Courvoisier, Thierry, Parmar, Arvind, Parmar, Arvind, Shaw, Simon, Paizis, Ada, Shaw, Simon, Mowlavi, Nami, Paltani, Stephane, Courvoisier, Thierry, Paizis, Ada, Mowlavi, Nami   +11 more
openaire   +2 more sources

Isotropic star in low-mass X-ray binaries and X-ray pulsars

, 2014
We present a model for compact stars in the low mass X-ray binaries(LMXBs) and X-ray pulsars using a metric given by John J. Matese and Patrick G. Whitman \citep{Matese and Whitman1980}. Here the field equations are reduced to a system of two algebraic equations considering the isotropic pressure.
Kalam, Mehedi, Hossein, Sk. Monowar, Molla, Sajahan   +2 more
openaire   +2 more sources

The attenuation of atmospheric Cerenkov photons [PDF]

, 2002
Whilst the atmosphere places a limit on the successful applications of many branches of astronomy, it becomes an invaluable tool for the detection of very high energy γ-rays. This thesis is concerned with reducing the systematic uncertainties inherent to
Daniel, Michael Kevin, Daniel, Michael
core   +1 more source

Circulating microRNA signatures of cachexia and cancer in Canis familiaris as a comparative oncology model for human disease

Molecular Oncology, EarlyView.
Circulating microRNAs as biomarkers of cachexia and sex‐specific cancer in senior dogs. In 25 client‐owned dogs, four circulating miRNAs (miR‐15a, miR‐15b, miR‐16, miR‐140) were downregulated in cachexia, with miR‐16 the strongest individual biomarker (AUC = 0.899).
Soon‐Seok Park, Kyongman An, Gyeonghwa Kim, Soo‐Nyun Choi, Hong‐Ki Lee, Keun Hur, Kyu‐Shik Jeong   +6 more
wiley   +1 more source

Creating Ti–Fe α/β Alloys by Diffusion‐Driven Solid‐State Processing

Advanced Engineering Materials, EarlyView.
This study proposes making alloys containing fast diffusing elements that are difficult to produce by ingot metallurgy, by diffusion‐driven solid‐state HIP processing of elemental powders and low‐temperature homogenisation. Here, novel Fe‐Ti α–β alloys are formed having fine α–β lamellae, a small β prior grain size without significant intermetallics ...
Jiaqi Xu, Xun Zhang, Jack M. Donoghue, Albert D. Smith, Rahul Unnikrishnan, Rhys Thomas, Vahid Nekouie, Jie Luo, Dongchen Hu, Michael Preuss, Philip J. Withers   +10 more
wiley   +1 more source

Binary Interaction Dominates the Evolution of Massive Stars [PDF]

, 2012
peer reviewedThe presence of a nearby companion alters the evolution of massive stars in binary systems, leading to phenomena such as stellar mergers, x-ray binaries, and gamma-ray bursts. Unambiguous constraints on the fraction of massive stars affected
Sana, H., Gieles, M., Izzard, R. G., Izzard, R.G., Sana, Hugues, de Koter, Alex, de Mink, S. E., Evans, C.J., Le Bouquin, J-B., de Mink, S.E., Schneider, F.R.N., Evans, C. J., Le Bouquin, J.-B., Schneider, F. R. N., Gosset, E., de Koter, A., Langer, N., Schneider, F.RN., Gosset, Eric   +18 more
core   +1 more source

Investigating the Ultracompact X-Ray Binary Candidate SLX 1735-269 with NICER and NuSTAR

The Astrophysical Journal
We present two simultaneous NICER and NuSTAR observations of the ultracompact X-ray binary (UCXB) candidate SLX 1735−269 while the source was in two different spectral states. Using various reflection modeling techniques, we find that xillverCO , a model
D. L. Moutard, R. M. Ludlam, M. Sudha, D. J. K. Buisson, E. M. Cackett, N. Degenaar, A. C. Fabian, P. Gandhi, J. A. García, A. W. Shaw, J. A. Tomsick   +10 more
doaj   +1 more source

NEUTRON STAR MASSES AND RADII FROM QUIESCENT LOW-MASS X-RAY BINARIES [PDF]

The Astrophysical Journal, 2014
We perform a systematic analysis of neutron star radius constraints from five quiescent low-mass X-ray binaries and examine how they depend on measurements of their distances and amounts of intervening absorbing material, as well as their assumed atmospheric compositions.
Lattimer, James M., Steiner, Andrew W.
openaire   +2 more sources